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Finding the Fourth Proportional to 425,428, 587,083.35 and 231,837.50

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Solution

The fourth proportional to 425,428, 587,083.35 and 231,837.50 is: 319,931.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,428 : 587,083.35 = 231,837.50 : x
  2. Step 2: Convert to fraction form
    425,428/587,083.35 = 231,837.50/x
  3. Step 3: Cross multiply
    425,428x = 587,083.35 × 231,837.50
  4. Step 4: Simplify right side
    425,428x = 136,107,936,155.63
  5. Step 5: Solve for x
    x = 136,107,936,155.63/425,428
  6. Step 6: Final answer
    x = 319,931.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.